24 Upgrading OHW-UIX

When upgrading from OHW-UIX to OHW-RC, the helpsets contents may remain unchanged, however, there are two things you need to do to use OHW-RC:

• Copy the OHW-RC jar files into the WEB-INF/lib directory.

• Modify the web.xml file under the WEB-INF/ directory. The best way to do this is to get the web.xml from the OHW-RC demo bundle and copy the servlet and resource definitions and mappings.

There are three major parts required in a web.xml for OHW-RC:

• Basic configuration for JSF Trinidad and ADF RC (Faces Servlet, Trinidad Servlet and Filter, etc.):

  <context-param>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>client</param-value>
  </context-param>
   
  <filter>
    <filter-name>trinidad</filter-name>
    <filter-class>org.apache.myfaces.trinidad.webapp.TrinidadFilter</filter-class>
  </filter>
   
  <filter-mapping>
    <filter-name>trinidad</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
  </filter-mapping>
   
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
   
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>/faces/*</url-pattern>
  </servlet-mapping>
   
  <servlet>
    <servlet-name>resources</servlet-name>
    <servlet-class>org.apache.myfaces.trinidad.webapp.ResourceServlet</servlet-class>
  </servlet>
   
  <servlet-mapping>
    <servlet-name>resources</servlet-name>
    <url-pattern>/adf/*</url-pattern>
  </servlet-mapping>
   
  <servlet-mapping>
    <servlet-name>resources</servlet-name>
    <url-pattern>/afr/*</url-pattern>
  </servlet-mapping>
  

• Basic configuration for OHW-RC:

  You need to define an OHW-RC Filter and map it to the Faces servlet.

  <filter>
    <filter-name>OHWRCFRequestFilter</filter-name>
    <filter-class>oracle.help.web.rich.OHWFilter</filter-class>
  </filter>
   
  <filter-mapping>
    <filter-name>OHWRCFRequestFilter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
  </filter-mapping>
  

• OHW-UIX Servlet definition and servlet mapping:

  The existing OHW-UIX servlet definitions need to be changed to use the OHW-RC class oracle.help.web.rich.OHWServlet. The following steps describe how to change existing OHW servlet definitions:

  1. To specify the location of the ohw-config.xml for a OHW-UIX servlet instance, define OHW_UIX servlets with <init-param> named ohwConfigFileURL.

  2. Define the URL mapping for OHW-UIX servlets. You do not have to change the existing servlet mappings.

  3. Specify the <load-on-startup> parameter.

  OHW-RC supports multiple OHW-RC instances in one Web application. Here is an example which deploys two OHW-RC instances in a web.xml:

  <!-- configuration for product1 help front servlet -->
  <servlet>
    <servlet-name>product1</servlet-name>
    <servlet-class>oracle.help.web.rich.OHWServlet</servlet-class>
    <init-param>
      <param-name>ohwConfigFileURL</param-name>
      <param-value>/helpsets/product1/ohwconfig.xml</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>
   
  <!-- configuration for product1 help front servlet -->
  <servlet>
    <servlet-name>product2</servlet-name>
    <servlet-class>oracle.help.web.rich.OHWServlet</servlet-class>
    <init-param>
      <param-name>ohwConfigFileURL</param-name>
      <param-value>/helpsets/product2/ohwconfig.xml</param-value>
    </init-param>
    <load-on-startup>3</load-on-startup>
  </servlet>
   
  <servlet-mapping>
    <servlet-name>product1</servlet-name>
    <url-pattern>/product1/*</url-pattern>
  </servlet-mapping>
   
  <servlet-mapping>
    <servlet-name>product2</servlet-name>
    <url-pattern>/product2/*</url-pattern>
  </servlet-mapping>